From system.membership we can find out what server exist in the
cluster while system.nodeinfo contains information about those
servers. If a node goes down, it will disappear from system.nodeinfo,
but not from system.membership. Consequently, we must start from
system.membership and then fetch more information from system.nodeinfo.
Incidentally, a query like
SELECT ms.nid, ni.iface_ip
FROM system.membership AS ms
LEFT JOIN system.nodeinfo AS ni ON ms.nid=ni.nodeid;
should provide all information in one go, but it seems that such joins
are not supported on the system tables.
9 lines
256 B
CMake
9 lines
256 B
CMake
add_library(clustrixmon SHARED
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clustrix.cc
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clustrixmon.cc
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clustrixmonitor.cc
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)
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target_link_libraries(clustrixmon maxscale-common)
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set_target_properties(clustrixmon PROPERTIES VERSION "1.0.0" LINK_FLAGS -Wl,-z,defs)
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install_module(clustrixmon core)
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